cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A350970 Triangle T(n,k) (n>=0, 0<=k<=n) read by rows: T(0,0)=T(1,1)=1; T(n,0) is the Euler number A000111(n-1) for n>=1; T(n,n-1) = T(n,n) = (n-2)! for n>=2; interior entries are given by T(n,k) = m*T(n-1,k-1)+(k+1)*T(n-1,k+1) where m = k if n+k is even or k-1 if n+k is odd.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 2
9 2
10 2
11 5
12 8
13 6
14 6
15 5
16 16
17 28
18 40
19 24
20 24
21 16
22 61
23 136
24 180
25 240
26 120
27 120
28 61
29 272
30 662
31 1232
32 1320
33 1680
34 720
35 720
36 272
37 1385
38 3968
39 7266
40 12096
41 10920
42 13440
43 5040
44 5040
45 1385
46 7936
47 24568
48 56320
49 83664
50 129024
51 100800
52 120960
53 40320
54 40320
55 7936
56 50521
57 176896
58 408360
59 814080
60 1023120
61 1491840
62 1028160
63 1209600
64 362880
65 362880

List of values

[1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 5, 8, 6, 6, 5, 16, 28, 40, 24, 24, 16, 61, 136, 180, 240, 120, 120, 61, 272, 662, 1232, 1320, 1680, 720, 720, 272, 1385, 3968, 7266, 12096, 10920, 13440, 5040, 5040, 1385, 7936, 24568, 56320, 83664, 129024, 100800, 120960, 40320, 40320, 7936, 50521, 176896, 408360, 814080, 1023120, 1491840, 1028160, 1209600, 362880, 362880]